package com.book.service;

import com.book.entity.Account;
import com.book.entity.BookCart;
import com.book.vo.CartVo;
import com.github.pagehelper.PageInfo;

import java.util.List;

/**
 * @author SuperYu  2024/7/30
 */
public interface BookCartService {

   int findCartNumByUserId(int userId);

   List<CartVo> findCartByUserId(int userId);

   int addToCart(BookCart cart);



}
